-diff = second.attributes.diff(first.attributes)
-diff.delete(:id)
-diff.delete(:is_versioned_id)
-diff.delete(:updated_at)
-diff.delete(:modified_by)
-diff.each do |k,v|
  %i
    =pat(k)
  &=first[k]
  \=>
  &=second[k]
Author:
-author = Account.find(first.modified_by_id)
=author ? (link_to author.display_name, url_for(author)) : '-'
